[MD Extensions] Update Detail View UI

chrome/browser/resources/md_extensions/item.html

 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/load_time_data.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://extensions/icons.html">
-<link rel="import" href="chrome://extensions/item_source.html">
+<link rel="import" href="chrome://extensions/item_util.html">
 <link rel="import" href="chrome://extensions/strings.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icons/iron-icons.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icons/communication-icons.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/shadow.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
 
 <dom-module id="extensions-item">
   <style include="iron-flex"></style>
   <template>
@@ skipping 221 matching lines @@
             hidden$="[[!data.disableReasons.corruptInstall]]">
           $i18n{itemRepair}
         </paper-button>
         <paper-button id="reload-button" on-tap="onReloadTap_"
             class="action-button"
             hidden$="[[!isTerminated_(data.state)]]">
           $i18n{itemReload}
         </paper-button>
         <paper-toggle-button id="enable-toggle" class="action-button"
             checked="[[isEnabled_(data.state)]]" on-change="onEnableChange_"
+            enabled="[[isEnableToggleEnabled_(data)]]"
             hidden$="[[!showEnableToggle_(data.*)]]">
         </paper-toggle-button>
       </div>
     </div>
   </template>
   <script src="chrome://extensions/item.js"></script>
 </dom-module>